Ever want to use a Speaker/Mic but don't want the crappy recieve audio from it ? ....Well, a small modification of the plug will allow you to recieve audio through the radio's own speaker while still being able to use the extension mic to TX.
This is an ideal solution for taking you handie mobile in the car where you may have it in a phone holder or airvent mount with external antenna connected.
This mod works only on the twin plug Kenwood standard ( Bumfeng,TYT,HYT, ...yeah, the chinese stuff) I tried this on a 3quid Baofeng S/M (as that's all they're good for --- experiments....absolute rubbish otherwise)
It's just a case of wizzing off the 2 end conductors on the 2.5mm (small pin) plug. AT YOUR OWN RISK I used a Dremel cutting disc.
Leave as much length on the stump as possible , to ensure a good contact in the socket. It may be possible to actually leave the middle contact intact as well, and just wizz the tip off, as this middle contact is not used for the S/M anyway. I only had the one to experiment on, so if someone tries that and it also works, please leave a reply here.
Happy Butchering !

Mattylad wrote:Could the alternative to this be to simply use a speaker extension cable (from £land) and then the mic does not need modding.....

No. I'm not sure you know the type of radio outputs I'm talking about. If a Speaker/Mic is plugged in, an extension speaker output is not avaiable on the radio. Except for an earphone socket on the mic itself, which would then require another cable from the S/M to another speaker, more wires, more cost, more clutter in your cab.

I've never, ever heard a speaker mic sound as good as the radio's own speaker, I have an expensive Kenwood speaker/mic and it sounds sh1te as well.
If you don't already own a Dremmel, you could use a hacksaw, I guess you can get them from "£land"

Mattylad wrote:Could the alternative to this be to simply use a speaker extension cable (from £land) and then the mic does not need modding.....

No. I'm not sure you know the type of radio outputs I'm talking about. If a Speaker/Mic is plugged in, an extension speaker output is not avaiable on the radio. Except for an earphone socket on the mic itself, which would then require another cable from the S/M to another speaker, more wires, more cost, more clutter in your cab.

I think Mattylad means a 3.5mm jack extension lead placed between the speakermic and the radio, so that the 2.5mm plug does not make contact at all.

That was the first thing that occurred to me also... shortly followed by cutting off the double pronged plug altogether and soldering on a straight 3.5mm stereo jack.

Is the screen on the 2.5mm plug actually required for anything, or were you just using the stub to improve the mechanical strength of the connection?